SEM is the wider discipline that incorporates SEO. SEM includes both paid search results (using tools like Google Adwords or Bing Ads, formerly known as Microsoft adCenter) and organic search results (SEO). SEM uses paid advertising with AdWords or Bing Ads, pay per click (particularly beneficial for local providers as it enables potential consumers to contact a company directly with one click), article submissions, advertising and making sure SEO has been done. A keyword analysis is performed for both SEO and SEM, but not necessarily at the same time. SEM and SEO both need to be monitored and updated frequently to reflect evolving best practices.

So just how much of the traffic that finds itself labeled as direct is actually organic? Groupon conducted an experiment to try to find out, according to Search Engine Land. They de-indexed their site for the better part of a day and looked at direct and organic traffic, by hour and by browser, to pages with long URLs, knowing that pages with shorter URLs actually do get a large amount of direct traffic, as they can be typed quickly and easily into a browser. The results showed a 50% drop in direct traffic, clearly demonstrating how all of these other factors come into play during the analytics process.

The objective of (SEM) is to drive traffic to your website with the intent of converting those visitors into customers. With SEM, it is important to have your business site listed near the top of the search engine rankings since very few internet users will actually look at search results beyond the first couple of pages. SEM can be divided into two categories: organic and paid. Both are important.
Social media is the easiest and most effective way to push out your SEO-based content. While the incoming links from your social media shares don’t have the same impact as authentic links from high-quality sites, they can influence your bounce rate and time-on-site engagement. If your content is good and people stick around to read it, those engagement metrics communicate value to search engines. Your goal should be to turn your best organic content into social media content so you can then encourage engagement and drive traffic back to your site.
Here’s the thing. Your web visitors aren’t homogeneous. This means that everyone accesses your site by taking a different path. You may not even be able to track that first point of contact for every visitor. Maybe they first heard of you offline. But in most cases, you can track that first touch point. The benefit? You can meet your potential customers exactly where they are.
BrightEdge research supports that a blended approach is best for delivering high performing content. Not only will combining organic and paid search increase website traffic, but it will offer a bigger return on the investment. Take Retail, Technology and Hospitality industries, for example — organic and paid search combined make up more than two-thirds of their total revenue.